Merge pull request #51033 from mtaufen/revert-51008-revert-50789-fix-scheme

Automatic merge from submit-queue (batch tested with PRs 50967, 50505, 50706, 51033, 51028)

Revert "Merge pull request #51008 from kubernetes/revert-50789-fix-scheme"

I'm spinning up a cluster right now to test this fix, but I'm pretty sure this was the problem.
There doesn't seem to be a way to confirm from logs, because AFAICT the logs from the hollow kubelet containers are not collected as part of the kubemark test.

**What this PR does / why we need it**:

This reverts commit f4afdecef8, reversing
changes made to e633a1604f.

This also fixes a bug where Kubemark was still using the core api scheme
to manipulate the Kubelet's types, which was the cause of the initial
revert.

**Which issue this PR fixes**: fixes #51007

**Release note**:

```release-note
NONE
```

/cc @shyamjvs @wojtek-t

test/integration/etcd/etcd_storage_path_test.go

@@ -434,10 +434,6 @@ var ephemeralWhiteList = createEphemeralWhiteList(
 	gvr("componentconfig", "v1alpha1", "kubeproxyconfigurations"),     // not stored in etcd
 	// --
 
-	// k8s.io/kubernetes/pkg/kubelet/apis/kubeletconfig/v1alpha1
-	gvr("kubeletconfig", "v1alpha1", "kubeletconfigurations"), // not stored in etcd
-	// --
-
 	// k8s.io/kubernetes/pkg/apis/extensions/v1beta1
 	gvr("extensions", "v1beta1", "deploymentrollbacks"),          // used to rollback deployment, not stored in etcd
 	gvr("extensions", "v1beta1", "replicationcontrollerdummies"), // not stored in etcd